Brick-machine.



A. H. OLSEN, G. .PEDBRSEN & J; ANDERSEN. V

BRIGK MACHINE.

APPLIOATION FILED SEPT. 18, 1909.

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A. H. OLSEN; 0; PEDBRSEN 6 J ANDERSELI. BRICK MACHINE.

APPLIOAT'IOK FILED SEPT. 18, 1909.

' Patented Jan. 10,1911.

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BRIOK MACHINE.

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E STATES PATENT oEEroE.

AUGUST H. oLsEN, CASPER PEnEnsEN, AND JOHN ANDERSEN, 0E MINNEAroLIs,

MINNESOTA.

BRICK-MACHINE.

' Specification of Letters Patent.

Patented Jan. 10, 1911.

To all whom it may concern:

Be it known that we, AUGUST H. OLSE CASPER PEDEnsEN, citizens of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Brick-Machines; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention has for its object to provide an improved machine especially adapted for making cement or concrete bricks, and to this end it consists of the novel devices and combinations of devices hereinafter described and defined in the claim.

In the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings, Figure 1 is a view in front elevation, showing the improved machine; Fig. 2 is a View of the machine chiefly in plan but with some parts sectioned and some parts removed; Fig. 3 is a plan view showing a fixed table of the machine removed from working position; Fig. 4 is a side elevation of the machine; Fig. 5 is a detail chiefly in vertical section on the line 00 m of Fig. 2, showing one of the brick molds of the rotary wheel and cooperating brick ejecting plunger; and Fig. 6 is a side elevation of the plunger shown in Fig. 5.

The base of the machine is preferably in the form of a heavy casting 1 having, at its upper portion, a horizontal circular table 2 with a central hub 3 and an approximately semi-circular cam flange 4:- A pair of laterally spaced pedestals 5 are rigidly secured to the base casting 1 and to its table 2 and these are rigidly tied together at their upper portion by a bar 6 and at their intermediate portions by a bar 7.

A heavy cast mold carrying wheel 8 is rotatively mounted on a short upright shaft 9 secured in the hub 3 of the table 2, and this wheel is provided with a multiplicity of circumferentially spaced rectangular cavities 10 that afford molds for the bricks. In its periphery, said wheel 8 is provided with long ratchet teeth 11 which, in number, are

and JOHN ANDEIEEN,

equal to the number of the molds 10, there being, as shown, eight of each thereof. An intermittent step by step rotary movement is imparted to the mold wheel 8 by a springpressed pawl 12 carried at the free outer end of the arm 13, which arm rests on the upper face of the mold wheel 8 and at its inner end is pivoted on the upwardly extended end of the shaft 90.

Rigidly secured to the pedestal 5 is an approxlmately triangular or three-armed plate 14 which performs several functions to be hereinafter noted. One of the arms of said plate 14: is upwardly ofiset at 15 and rigidly secured to the upper end of a third or shorter pedestal 16, which latter, in turn, is rigidly secured to the base 1 and table 2. Mounted to slide in suitable bearings 17 on top of the plate 1 1 is a plunger 18 provided with depending lugs 19 that engage the opposite' sides of the intermediate portion of the lever 13 and cause the lever to vibrate when the said plunger is reciprocated. The left hand end of the plunger 18, as viewed in Fig. 1, is connected by a short link 21 to the upper arm of a bell crank 22 that is pivoted to the left hand pedestal 5. The other arm of said bell crank isconnected by a rod 23 to a cross head 2 1 mounted to reciprocate vertically on thesaid left hand pedestal and connected by a longer crank rod 25 to a crank 26 secured to the left hand end of a counter shaft 27 journaled in the two pedestals 5. The counter shaft 27 carries a gear 28 that meshes with a pinion 29 of a counter shaft 30 which is journaled in the pedestals 5, above the said counter shaft 27, and is provided at one end with a pulley 31 over which a power driven belt, not shown, will run to transmit motion to all of the working parts of the machine.

Under the step by step rotary movement imparted to the mold wheel 8, the molds 10 are delivered in succession, one at a time, under a depending rectangular discharge spout 32 of a hopper 33 which, as shown, is rigidly secured to the right hand pedestal 5 and to the tie bar 7. This hopper 33 is provided with a semi-cylindrical bottom, and mounted to work therein is a rotary cy lindrical feed head 34 provided with a multiplicity of radial pockets 35, as shown, eight in number, that are adapted to de liver the concrete to the spout 32 and from thence into the underlying mold. The proj ecting shaft 36 of this feed wheel 34'is providedwith an eight-toothed ratchet wheel 1 37 upon which works a driving pawl 38 carried by an arm 39 that is pivotally mounted in the said shaft 36. A connecting rod 40 Y 'Working vertically in each mold 10 is a rectangular compressing and ejecting block 41 which is adapted to drop bygravi'ty on V to the table 2, and under rotation of the mold wheel 8 to be carried on to the cam flange 4, which latter, it will be noted by reference to Fig. 4, is inclined so that the said blocks 41'will be raised in the molds under rotation of said wheel 8." When the bricks made are formed with smooth faces,

the blocks 4 may completely fill the molds 10- in cross section, but where bricks with imitation rock or other ornamental end face are desired, supplemental sections 42 may be employed, as best shown in Figs. 5 and 6. These supplemental sections 42 are in the form of thln wedge shaped members having vertical slots 43 and projecting studs 44. These studs 44 work in grooves 45 in the adjacent edges of the blocks 41 and pins or studs 46 on the mold block 8 work in the said slots 43. The exact arrangement of these parts will more fully appear in the description of the operation. As the compressing and ejecting blocks 41 are moved from the filling positions below the hopper spout 32 into engagement with the cam flange 4, they are passed over the upper end or head of a compression plunger 47 working through the table 2 and resting upon a projection 48 of the cross head 24.

The operation of this improved machine is substantially as follows: The concrete or mixture of sand, cement and water, which is'placed in the hopper 33, will keep the upturned pockets 35 of the said block 34 filled therewith. Under movement of the plunger 18 from right toward the left in respect to Figs. 1 and 2, the pawl 12 acting on the ratchet teeth 11 will impart one step of movement to the mold wheel in the direction of the arrow marked adjacent thereto on Fig. 2, thus carrying a previously filled mold out from under the hopper spout 32,

and during this movement the feed head 34 remains stationary. Under movement of the said plunger 18 from left toward the right, the mold wheel stands still with one of its molds 10 positioned directly under the hopper spout 32, and the feed head 32 is at this time given its step of movement necessary to bring another filled pocket 35 over the hopper spout 32, thereby depositing the required amount of concrete within the said mold. When the mold wheel 8 remains stationary as above noted, under movement of the' plunger 18 from the left toward the right, one of its filled molds will always be left standing directly over the compression plunger 47 and with the lower end of its compressing and ejecting block 41 in position to be engaged by the head of said plunger. The final portion of the upward movement of the cross head 24, which takes place at the final movement of the plunger 18 from left toward the right, causes the plunger 47 to raise the overlyin block 41 slightly within its mold, thereby tightly compressing the concrete contained within the said mold. The concrete thus compressed is forced against the underlying portion of the compression plate 14, which portion of said plate is in such close engagement with the upper surface of the mold wheels 8 that the material cannot be forced out of the mold. The amount of upward movement thus imparted to the block 41 is only suflicie'n't to carry the lower extremity of the groove 45 (see Fig. 5) into engagement with the stud 44 of the supplemental plunger section 42, the extreme downward movement of which is limited by the stud '46. Continued movement of the mold wheel 8 in the direction stated carries the mold, in which the concrete has been compressed, out from under the compression plate 14 and carries the lower extremity of the cooperating block 41 into engagement with the cam flange 4. Under still further rotary movement of the mold wheel 8 in the same direction, the said cam flange 4 forces the block 41 upward in the mold until it has completely ejected the formed brick and, under this ejecting movement, the stud 44 having reached the lower extremity of the slot 45, the supplemental plunger section 42 is raised with the main section 41 and as it is raised, its wedge form permits the same to drop away from the ornamental end of the brick. The bricks thus formed and dclivered on top of the mold wheel 8 may be picked up or removed therefrom in any suitable way or by any suitable means. As is evident, bricks may be repeatedly and continuously formed by this improved machine and the only manual labor required is that necessary to keep the hopper 33 filled with concrete and the formed bricks carried away.

Vhat we claim is:

In a machine of the kind described, the combination with a rotary mold wheel having a plurality of molds, of compressing and ejecting blocks working in said molds, a vertically movable plunger and a fixed cam over which the said blocks are moved in succession, a vertically movable cross head for lifting said plunger, a hopper having a discharge passage arranged to deliver into said molds, a rotary feed head in said hopper having a plurality of pockets, a reciprocatory slide connected to said cross head,

two pawl and ratchet devices arranged to be In testimony whereof We affix our signa- 10 alternateiy actuated by sald shde, the one tures in presence of tWo Witnesses.

serving to impart a step by step rotary movement to said mold Wheel and the other to impart step by step rotary movement to T said feed head, a power-driven countershaft, JOHB ANDERSEN' and a crank and rod connecting said cross Vitnesses:

head to said countershaft, substantially as ALICE V. SWANSON, described. HARRY D. KILGORE. 

